James f



(No Model.)

l J. r. GUMMINGS. y APPARATUS FOR. MANUFACTURING GONDUIT SECTIONS.

No. 528,290. Patented 001;. so., 1894./

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UNITED STATES PATENT OFFICE.

JAMES F. CUMMIN GS, OF DETROIT, MICHIGAN, ASSIGNOR TO THE CUMMING daENGELMAN CONDUIT COMPANY, OF SAME PLACE. l

APPARATUS Fonu MANUFACTURING coNDUlT-sEcTloNs.

SPECIFICATION forming part of Letters Patent No. 528,290, dated October30, 1894.

Application iilerl January 16, 1894. `Serial No.497,092. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JAMES F. CUMMINGS, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and,

tion of the apparatus, showing a series of con' duit casings iu positionready for filling.

Fig. 2 is a vertical, central, longitudinal section through one of suchtubes, and the frame. Fig. 3 is a similar section partly broken away inthe middle, showing a slightly modiied form. Fig. 4 is a plan view ofthe upper conduit or filling cap. Fig. 5 is a bottom perspective Viewthereof.

In the present state of the art it is customary to center the conduitsin the conduit casing by ropes or spacing blocks and then to force in ahardening compound around the two, by means of a pump, or by partiallyfilling the casing with the compound and then forcing in the ducts theYspacing block. These methods are found to have a number of objectionswhich my improved apparatus is designed to overcome.

The apparatus which I have shown consists of a suitable base A. y

B are a series of guide pins and C are plates apertured to receive saidpins and to be adjusted vertically thereon by means of a screw bolt Dentering the base A. These plates are provided on their upper face withgrooves or sockets E in which pins or flanges G on the lower face of thelower cap Hof the conduit casing are adapted to engage.

I represents a conduit casing, preferably of metal pipe, and J are theducts preferably of wood or similar non-conducting material, which areadapted to be secured in the casing I have shown the casing and ducts ascircular and this I deem the preferable shape,

although other cross sections ployed.

The lower cap is provided" withp a central circular projection K adaptedto enter the lower end of the casing, and with a series of nipples Lterminating in plugsM of a size to Iit the interior of theducts, one foreach duct and arranged in such relation to the casing as the ducts areintended to be in the finished 6o conduit.

The casing is secured over the projections K, as shown in Fig. 2. Theducts are secured upon the nipples L with the plugs M engaging in thelower ends thereof. The upper end of the casing is then capped by theupper cap O, which is provided with a corre sponding series of nipples Ohaving plugs P adapted to enter the upper ends of the ducts and with anenlargement Q adapted to ht 7o into the upper end of the casing.

The upper cap is provided with one or more lling apertures R. When thecasing and ducts have thus been assembled, the parts are clampedtogether by means of a clamping bar S resting on the caps O, the partsbeing clamped together by means of the clamping bolts T, as shown inFig. l. The material may now be poured into the apertures R and will illthe space within the casing aroundthe 8o ducts and around the nipples Land O. The air therein may escape either through one of the apertures atthe top or a small vent U may be formed at the bottom. When illed may beemthe ducts are allowed to remain until the v l material hardens ordries and then they may be removed from the frame.

The construction described is intended to form conduit sections in whichthe ducts are recessed a shortdistance into the end of the 9o casing,the end being filled by suitable plugs or connecting sections.

In case it is desired to have one or both ends of the ducts projectbeyond the casing this can be accomplished by providing sockets for theends of the ducts in the caps, as shown in Fig. 3 instead of having thenipples O therefor. l

What I claim as my invention is 1. The combination of the frame, capsfor ros the ends, theplugs on said caps adapted to ent-er the end of theducts, means for clamping the caps upon the conduit section, the uppercap being provided with pouring apertures, substantially as described.

2. The combination of the base, the guides thereon, the lower cappedplate C slidingly engaging on said guides, means for adjusting saidplate vertically, the lower capped plate K having a plug for the lowerend of the casing and plugs and centering devices for the ducts, acorresponding top cap having pouring apertures and clampin g devices,substantially as described.

3. The combination With a base and conduit casing, of caps for the endsof the casing, the upper cap having a till opening therein, retainingmeans on the caps, ducts on the retaining means, and a clamp forretaining the casing in an upright position, substantially as described.

4. The combination with a base, of an adjustable plate thereon, a cap onthe plate having duct seats thereon, a casing on the cap, ducts on theseats, a cap on the upper end of the casing having corresponding ductseats on its under face, and fill openings and means for retaining thecasing in an upright position, substantially as described.

5. The combination with a base, of a oonduit casing thereon, a removablecap fitted to the lower end of the easing havingaduct retaining seat, aduet on the seat, a removable cap fitting the upper end of the casinghaving fill openings therein and a corresponding duct with which theduct engages, and means for retaining the casing in an upright position,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES F. CUMMINGS.

iVitnesses:

M. B. ODOGHERTY, O. F. BARTHEL.

